You asked
Canon eos 5d mark iii vs canon eos 6d?
The two are close. Both are full-frame Canon DSLRs announced in 2012, both use the EF mount, and neither has in-body stabilisation, so you'll want stabilised lenses for slow shutter speeds. The 5D Mark III has the edge on resolution at 22.3 megapixels against the 6D's 20.2. I'd call the 5D Mark III the workhorse of the two, while the Canon EOS 6D is one of the cheapest ways into full frame on the used market. If pixels matter more to you than price, go for the Canon EOS 5D Mark III.
Both take the same lenses, so your lens choice matters more than the body. For an everyday kit, I'd look at:
- Canon EF 24-105mm f/4L IS II USM for general walking-around shooting
- Canon EF 70-200mm f/4L IS II USM for portraits and distance
- Canon EF 50mm f/1.8 STM if you want a cheap, light prime
For more on sensor sizes, see sensor sizes.
Written by Claude from this site's pages.